Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '67a5f27dffaf74c57de97286fc17693510a54de8b0bc92a4517e2655ad0b4fef' 
  AND token = 'tg0fwj5SUOGdVbA/V8W0sV1h1MN1vdon13bD2mIfCuA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}